201211321441 has 8 divisors (see below), whose sum is σ = 224161154280. Its totient is φ = 179328922752.

The previous prime is 201211321439. The next prime is 201211321453. The reversal of 201211321441 is 144123112102.

It can be written as a sum of positive squares in 4 ways, for example, as 1048140625 + 200163180816 = 32375^2 + 447396^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201211321441 - 2¹ = 201211321439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201211321541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266858140 + ... + 266858893.

It is an arithmetic number, because the mean of its divisors is an integer number (28020144285).

Almost surely, 2^201211321441 is an apocalyptic number.

It is an amenable number.

201211321441 is a deficient number, since it is larger than the sum of its proper divisors (22949832839).

201211321441 is a wasteful number, since it uses less digits than its factorization.

201211321441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533717075.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 201211321441 its reverse (144123112102), we get a palindrome (345334433543).

The spelling of 201211321441 in words is "two hundred one billion, two hundred eleven million, three hundred twenty-one thousand, four hundred forty-one".